./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b0f1d623fff7bbdf74e6250d2f53fb98e44ca7ba1aae1265f5b0871b427fba0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 18:10:02,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 18:10:02,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 18:10:02,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 18:10:02,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 18:10:02,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 18:10:02,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 18:10:02,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 18:10:02,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 18:10:02,294 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 18:10:02,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 18:10:02,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 18:10:02,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 18:10:02,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 18:10:02,298 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 18:10:02,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 18:10:02,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 18:10:02,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 18:10:02,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 18:10:02,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 18:10:02,300 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 18:10:02,304 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 18:10:02,305 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 18:10:02,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 18:10:02,305 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 18:10:02,305 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 18:10:02,306 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 18:10:02,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 18:10:02,306 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 18:10:02,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 18:10:02,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 18:10:02,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 18:10:02,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 18:10:02,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 18:10:02,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 18:10:02,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 18:10:02,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 18:10:02,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 18:10:02,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 18:10:02,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 18:10:02,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 18:10:02,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 18:10:02,312 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b0f1d623fff7bbdf74e6250d2f53fb98e44ca7ba1aae1265f5b0871b427fba0 [2024-10-14 18:10:02,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 18:10:02,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 18:10:02,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 18:10:02,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 18:10:02,620 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 18:10:02,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-1.i [2024-10-14 18:10:04,402 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 18:10:04,690 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 18:10:04,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-1.i [2024-10-14 18:10:04,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308073bf4/efc3d24b1877465c9a29748df31e511f/FLAGc572a1a10 [2024-10-14 18:10:04,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308073bf4/efc3d24b1877465c9a29748df31e511f [2024-10-14 18:10:04,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 18:10:04,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 18:10:04,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 18:10:04,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 18:10:04,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 18:10:04,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:10:04" (1/1) ... [2024-10-14 18:10:04,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df17766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:04, skipping insertion in model container [2024-10-14 18:10:04,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:10:04" (1/1) ... [2024-10-14 18:10:04,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 18:10:05,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 18:10:05,111 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 18:10:05,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 18:10:05,243 INFO L204 MainTranslator]: Completed translation [2024-10-14 18:10:05,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05 WrapperNode [2024-10-14 18:10:05,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 18:10:05,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 18:10:05,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 18:10:05,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 18:10:05,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,316 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 141 [2024-10-14 18:10:05,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 18:10:05,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 18:10:05,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 18:10:05,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 18:10:05,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,356 INFO L175 MemorySlicer]: Split 31 memory accesses to 2 slices as follows [2, 29]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 17 writes are split as follows [0, 17]. [2024-10-14 18:10:05,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 18:10:05,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 18:10:05,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 18:10:05,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 18:10:05,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (1/1) ... [2024-10-14 18:10:05,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 18:10:05,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:10:05,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 18:10:05,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 18:10:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 18:10:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 18:10:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 18:10:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 18:10:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 18:10:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 18:10:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 18:10:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 18:10:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 18:10:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 18:10:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 18:10:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 18:10:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 18:10:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 18:10:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 18:10:05,663 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 18:10:05,666 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 18:10:06,050 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2024-10-14 18:10:06,051 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 18:10:06,101 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 18:10:06,102 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-14 18:10:06,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:10:06 BoogieIcfgContainer [2024-10-14 18:10:06,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 18:10:06,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 18:10:06,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 18:10:06,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 18:10:06,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:10:04" (1/3) ... [2024-10-14 18:10:06,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba5ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:10:06, skipping insertion in model container [2024-10-14 18:10:06,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:10:05" (2/3) ... [2024-10-14 18:10:06,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba5ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:10:06, skipping insertion in model container [2024-10-14 18:10:06,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:10:06" (3/3) ... [2024-10-14 18:10:06,113 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-optional-1.i [2024-10-14 18:10:06,131 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 18:10:06,132 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2024-10-14 18:10:06,201 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 18:10:06,209 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7bca1852, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 18:10:06,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2024-10-14 18:10:06,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 60 states have (on average 2.4) internal successors, (144), 126 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-14 18:10:06,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:06,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-14 18:10:06,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:06,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash 8653, now seen corresponding path program 1 times [2024-10-14 18:10:06,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:06,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666475003] [2024-10-14 18:10:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:06,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:06,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666475003] [2024-10-14 18:10:06,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666475003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:06,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 18:10:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028599340] [2024-10-14 18:10:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:06,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 18:10:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:06,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 18:10:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:10:06,492 INFO L87 Difference]: Start difference. First operand has 127 states, 60 states have (on average 2.4) internal successors, (144), 126 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:06,706 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2024-10-14 18:10:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 18:10:06,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-14 18:10:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:06,719 INFO L225 Difference]: With dead ends: 121 [2024-10-14 18:10:06,719 INFO L226 Difference]: Without dead ends: 120 [2024-10-14 18:10:06,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:10:06,727 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 98 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:06,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 66 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-14 18:10:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2024-10-14 18:10:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 118 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2024-10-14 18:10:06,767 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 2 [2024-10-14 18:10:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:06,768 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2024-10-14 18:10:06,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2024-10-14 18:10:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-14 18:10:06,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:06,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-14 18:10:06,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 18:10:06,770 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:06,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash 8654, now seen corresponding path program 1 times [2024-10-14 18:10:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084094284] [2024-10-14 18:10:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:06,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:06,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084094284] [2024-10-14 18:10:06,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084094284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:06,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:06,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 18:10:06,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250039210] [2024-10-14 18:10:06,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:06,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 18:10:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 18:10:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:10:06,994 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:07,100 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2024-10-14 18:10:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 18:10:07,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-14 18:10:07,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:07,102 INFO L225 Difference]: With dead ends: 111 [2024-10-14 18:10:07,102 INFO L226 Difference]: Without dead ends: 111 [2024-10-14 18:10:07,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:10:07,104 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 87 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:07,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 80 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-10-14 18:10:07,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-10-14 18:10:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 62 states have (on average 1.9838709677419355) internal successors, (123), 110 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2024-10-14 18:10:07,112 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 2 [2024-10-14 18:10:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:07,112 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2024-10-14 18:10:07,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2024-10-14 18:10:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 18:10:07,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:07,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:07,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 18:10:07,114 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:07,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:07,114 INFO L85 PathProgramCache]: Analyzing trace with hash 982537625, now seen corresponding path program 1 times [2024-10-14 18:10:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091325523] [2024-10-14 18:10:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:07,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091325523] [2024-10-14 18:10:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091325523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:07,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745272689] [2024-10-14 18:10:07,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:07,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:07,268 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:07,464 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2024-10-14 18:10:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:10:07,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-14 18:10:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:07,466 INFO L225 Difference]: With dead ends: 147 [2024-10-14 18:10:07,466 INFO L226 Difference]: Without dead ends: 147 [2024-10-14 18:10:07,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:10:07,467 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 41 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:07,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 253 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-14 18:10:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 110. [2024-10-14 18:10:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 62 states have (on average 1.967741935483871) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2024-10-14 18:10:07,484 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 7 [2024-10-14 18:10:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:07,484 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2024-10-14 18:10:07,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2024-10-14 18:10:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 18:10:07,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:07,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:07,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 18:10:07,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:07,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash 982537626, now seen corresponding path program 1 times [2024-10-14 18:10:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:07,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882918841] [2024-10-14 18:10:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:07,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:07,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:07,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882918841] [2024-10-14 18:10:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882918841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:07,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:07,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:07,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165639629] [2024-10-14 18:10:07,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:07,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:07,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:07,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:07,709 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:07,881 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2024-10-14 18:10:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:10:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-14 18:10:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:07,882 INFO L225 Difference]: With dead ends: 109 [2024-10-14 18:10:07,883 INFO L226 Difference]: Without dead ends: 109 [2024-10-14 18:10:07,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:10:07,884 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 1 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:07,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 282 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-14 18:10:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-10-14 18:10:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 62 states have (on average 1.9516129032258065) internal successors, (121), 108 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 121 transitions. [2024-10-14 18:10:07,894 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 121 transitions. Word has length 7 [2024-10-14 18:10:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:07,895 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 121 transitions. [2024-10-14 18:10:07,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 121 transitions. [2024-10-14 18:10:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-14 18:10:07,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:07,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:07,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 18:10:07,897 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:07,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1618272074, now seen corresponding path program 1 times [2024-10-14 18:10:07,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129892012] [2024-10-14 18:10:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:07,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:07,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:07,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129892012] [2024-10-14 18:10:07,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129892012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:07,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 18:10:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040560947] [2024-10-14 18:10:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:07,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 18:10:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 18:10:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:10:07,989 INFO L87 Difference]: Start difference. First operand 109 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:08,124 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2024-10-14 18:10:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:10:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-14 18:10:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:08,126 INFO L225 Difference]: With dead ends: 103 [2024-10-14 18:10:08,126 INFO L226 Difference]: Without dead ends: 103 [2024-10-14 18:10:08,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:08,129 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 122 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:08,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 56 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-14 18:10:08,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-14 18:10:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.7611940298507462) internal successors, (118), 100 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2024-10-14 18:10:08,142 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 10 [2024-10-14 18:10:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:08,143 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2024-10-14 18:10:08,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2024-10-14 18:10:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-14 18:10:08,143 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:08,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:08,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 18:10:08,144 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:08,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1618272075, now seen corresponding path program 1 times [2024-10-14 18:10:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118924639] [2024-10-14 18:10:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:08,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:08,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118924639] [2024-10-14 18:10:08,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118924639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:08,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:08,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190375734] [2024-10-14 18:10:08,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:08,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 18:10:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:08,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 18:10:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:10:08,341 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:08,514 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2024-10-14 18:10:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 18:10:08,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-14 18:10:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:08,516 INFO L225 Difference]: With dead ends: 133 [2024-10-14 18:10:08,520 INFO L226 Difference]: Without dead ends: 133 [2024-10-14 18:10:08,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 18:10:08,521 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 259 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:08,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 89 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-14 18:10:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2024-10-14 18:10:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.6555555555555554) internal successors, (149), 123 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2024-10-14 18:10:08,535 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 10 [2024-10-14 18:10:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:08,536 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2024-10-14 18:10:08,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,536 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2024-10-14 18:10:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 18:10:08,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:08,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:08,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 18:10:08,537 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:08,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash 381486353, now seen corresponding path program 1 times [2024-10-14 18:10:08,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:08,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176245994] [2024-10-14 18:10:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:08,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:08,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176245994] [2024-10-14 18:10:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176245994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:08,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738848301] [2024-10-14 18:10:08,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:08,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:08,688 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:08,846 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2024-10-14 18:10:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 18:10:08,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-14 18:10:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:08,847 INFO L225 Difference]: With dead ends: 124 [2024-10-14 18:10:08,847 INFO L226 Difference]: Without dead ends: 124 [2024-10-14 18:10:08,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 18:10:08,848 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 36 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:08,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 175 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-14 18:10:08,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-10-14 18:10:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.6444444444444444) internal successors, (148), 122 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2024-10-14 18:10:08,859 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 12 [2024-10-14 18:10:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:08,860 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2024-10-14 18:10:08,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2024-10-14 18:10:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 18:10:08,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:08,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:08,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 18:10:08,863 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:08,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash 381486354, now seen corresponding path program 1 times [2024-10-14 18:10:08,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:08,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998826502] [2024-10-14 18:10:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998826502] [2024-10-14 18:10:09,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998826502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:09,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:09,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122926345] [2024-10-14 18:10:09,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:09,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:09,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:09,058 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:09,205 INFO L93 Difference]: Finished difference Result 114 states and 139 transitions. [2024-10-14 18:10:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 18:10:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-14 18:10:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:09,207 INFO L225 Difference]: With dead ends: 114 [2024-10-14 18:10:09,207 INFO L226 Difference]: Without dead ends: 114 [2024-10-14 18:10:09,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 18:10:09,208 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 17 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:09,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 207 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-14 18:10:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2024-10-14 18:10:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 108 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2024-10-14 18:10:09,212 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 12 [2024-10-14 18:10:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:09,212 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2024-10-14 18:10:09,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2024-10-14 18:10:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 18:10:09,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:09,213 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:09,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 18:10:09,214 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:09,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash -995054051, now seen corresponding path program 1 times [2024-10-14 18:10:09,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:09,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479955817] [2024-10-14 18:10:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:09,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:09,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:09,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479955817] [2024-10-14 18:10:09,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479955817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:09,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:09,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 18:10:09,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713166024] [2024-10-14 18:10:09,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:09,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 18:10:09,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:09,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 18:10:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:10:09,258 INFO L87 Difference]: Start difference. First operand 109 states and 133 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:09,336 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2024-10-14 18:10:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 18:10:09,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-14 18:10:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:09,338 INFO L225 Difference]: With dead ends: 119 [2024-10-14 18:10:09,338 INFO L226 Difference]: Without dead ends: 119 [2024-10-14 18:10:09,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:10:09,339 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 105 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:09,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 108 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:09,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-10-14 18:10:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2024-10-14 18:10:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 86 states have (on average 1.5348837209302326) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2024-10-14 18:10:09,343 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 15 [2024-10-14 18:10:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:09,343 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2024-10-14 18:10:09,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2024-10-14 18:10:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 18:10:09,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:09,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 18:10:09,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:09,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash 638826154, now seen corresponding path program 1 times [2024-10-14 18:10:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:09,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049685969] [2024-10-14 18:10:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:09,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:09,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049685969] [2024-10-14 18:10:09,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049685969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:09,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:09,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:09,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602942618] [2024-10-14 18:10:09,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:09,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 18:10:09,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:09,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 18:10:09,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:10:09,381 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:09,431 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2024-10-14 18:10:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 18:10:09,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-14 18:10:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:09,432 INFO L225 Difference]: With dead ends: 115 [2024-10-14 18:10:09,432 INFO L226 Difference]: Without dead ends: 115 [2024-10-14 18:10:09,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:10:09,433 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:09,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 209 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:10:09,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-14 18:10:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-10-14 18:10:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 90 states have (on average 1.511111111111111) internal successors, (136), 112 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2024-10-14 18:10:09,437 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 17 [2024-10-14 18:10:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:09,437 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2024-10-14 18:10:09,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2024-10-14 18:10:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 18:10:09,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:09,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:09,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 18:10:09,438 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:09,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1890325896, now seen corresponding path program 1 times [2024-10-14 18:10:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249186820] [2024-10-14 18:10:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:09,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:09,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249186820] [2024-10-14 18:10:09,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249186820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:09,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:09,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749060455] [2024-10-14 18:10:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:09,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:09,619 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:09,833 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2024-10-14 18:10:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:10:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-14 18:10:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:09,838 INFO L225 Difference]: With dead ends: 117 [2024-10-14 18:10:09,838 INFO L226 Difference]: Without dead ends: 117 [2024-10-14 18:10:09,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:10:09,839 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 4 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:09,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 218 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-10-14 18:10:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2024-10-14 18:10:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.5) internal successors, (135), 111 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2024-10-14 18:10:09,847 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 17 [2024-10-14 18:10:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:09,847 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2024-10-14 18:10:09,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2024-10-14 18:10:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 18:10:09,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:09,851 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:09,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 18:10:09,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:09,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1890325897, now seen corresponding path program 1 times [2024-10-14 18:10:09,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:09,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498715397] [2024-10-14 18:10:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:09,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498715397] [2024-10-14 18:10:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498715397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:10,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:10,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 18:10:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071984673] [2024-10-14 18:10:10,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:10,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:10,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:10,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:10,239 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:10,449 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2024-10-14 18:10:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:10:10,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-14 18:10:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:10,450 INFO L225 Difference]: With dead ends: 111 [2024-10-14 18:10:10,454 INFO L226 Difference]: Without dead ends: 111 [2024-10-14 18:10:10,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:10:10,455 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:10,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 213 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-10-14 18:10:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-10-14 18:10:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.488888888888889) internal successors, (134), 110 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2024-10-14 18:10:10,464 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 17 [2024-10-14 18:10:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:10,465 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2024-10-14 18:10:10,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2024-10-14 18:10:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 18:10:10,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:10,465 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:10,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 18:10:10,466 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:10,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:10,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1737809532, now seen corresponding path program 1 times [2024-10-14 18:10:10,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:10,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415768536] [2024-10-14 18:10:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415768536] [2024-10-14 18:10:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415768536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 18:10:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843271481] [2024-10-14 18:10:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:10,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:10,719 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:10,982 INFO L93 Difference]: Finished difference Result 176 states and 208 transitions. [2024-10-14 18:10:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 18:10:10,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-14 18:10:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:10,985 INFO L225 Difference]: With dead ends: 176 [2024-10-14 18:10:10,985 INFO L226 Difference]: Without dead ends: 176 [2024-10-14 18:10:10,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:10:10,986 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 79 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:10,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 234 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-14 18:10:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 118. [2024-10-14 18:10:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 117 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2024-10-14 18:10:10,991 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 18 [2024-10-14 18:10:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:10,992 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2024-10-14 18:10:10,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2024-10-14 18:10:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 18:10:10,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:10,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:10,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 18:10:10,994 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:10,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1183403644, now seen corresponding path program 1 times [2024-10-14 18:10:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:10,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549514579] [2024-10-14 18:10:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:11,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549514579] [2024-10-14 18:10:11,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549514579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:11,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:11,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 18:10:11,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813264597] [2024-10-14 18:10:11,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:11,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 18:10:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 18:10:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:10:11,130 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:11,347 INFO L93 Difference]: Finished difference Result 189 states and 223 transitions. [2024-10-14 18:10:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 18:10:11,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-14 18:10:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:11,349 INFO L225 Difference]: With dead ends: 189 [2024-10-14 18:10:11,349 INFO L226 Difference]: Without dead ends: 189 [2024-10-14 18:10:11,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 18:10:11,350 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 147 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:11,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 172 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-14 18:10:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 130. [2024-10-14 18:10:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 129 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 158 transitions. [2024-10-14 18:10:11,353 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 158 transitions. Word has length 18 [2024-10-14 18:10:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:11,353 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 158 transitions. [2024-10-14 18:10:11,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 158 transitions. [2024-10-14 18:10:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 18:10:11,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:11,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:11,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 18:10:11,355 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:11,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1183403645, now seen corresponding path program 1 times [2024-10-14 18:10:11,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:11,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344605168] [2024-10-14 18:10:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:11,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344605168] [2024-10-14 18:10:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344605168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 18:10:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807006662] [2024-10-14 18:10:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:11,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:11,447 INFO L87 Difference]: Start difference. First operand 130 states and 158 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:11,625 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-10-14 18:10:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 18:10:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-14 18:10:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:11,626 INFO L225 Difference]: With dead ends: 183 [2024-10-14 18:10:11,626 INFO L226 Difference]: Without dead ends: 183 [2024-10-14 18:10:11,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:10:11,627 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 78 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:11,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 316 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-10-14 18:10:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 118. [2024-10-14 18:10:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 117 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2024-10-14 18:10:11,634 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 18 [2024-10-14 18:10:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:11,634 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2024-10-14 18:10:11,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2024-10-14 18:10:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 18:10:11,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:11,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:11,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 18:10:11,635 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:11,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2122213363, now seen corresponding path program 1 times [2024-10-14 18:10:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556331019] [2024-10-14 18:10:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:11,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556331019] [2024-10-14 18:10:11,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556331019] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:11,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:11,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 18:10:11,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369881275] [2024-10-14 18:10:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:11,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 18:10:11,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 18:10:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-14 18:10:11,936 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:12,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:12,304 INFO L93 Difference]: Finished difference Result 228 states and 267 transitions. [2024-10-14 18:10:12,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 18:10:12,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-14 18:10:12,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:12,305 INFO L225 Difference]: With dead ends: 228 [2024-10-14 18:10:12,306 INFO L226 Difference]: Without dead ends: 228 [2024-10-14 18:10:12,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-10-14 18:10:12,307 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 249 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:12,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 343 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 18:10:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-14 18:10:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 129. [2024-10-14 18:10:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 108 states have (on average 1.4537037037037037) internal successors, (157), 128 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 157 transitions. [2024-10-14 18:10:12,310 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 157 transitions. Word has length 19 [2024-10-14 18:10:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:12,310 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 157 transitions. [2024-10-14 18:10:12,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 157 transitions. [2024-10-14 18:10:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 18:10:12,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:12,311 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:12,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 18:10:12,312 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:12,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2122213364, now seen corresponding path program 1 times [2024-10-14 18:10:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:12,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922816067] [2024-10-14 18:10:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:12,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:12,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922816067] [2024-10-14 18:10:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922816067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:12,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:12,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 18:10:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213761063] [2024-10-14 18:10:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:12,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 18:10:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 18:10:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-14 18:10:12,555 INFO L87 Difference]: Start difference. First operand 129 states and 157 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:12,970 INFO L93 Difference]: Finished difference Result 184 states and 217 transitions. [2024-10-14 18:10:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 18:10:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-14 18:10:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:12,971 INFO L225 Difference]: With dead ends: 184 [2024-10-14 18:10:12,971 INFO L226 Difference]: Without dead ends: 184 [2024-10-14 18:10:12,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-10-14 18:10:12,975 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 154 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:12,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 339 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 18:10:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-14 18:10:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 129. [2024-10-14 18:10:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 128 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2024-10-14 18:10:12,978 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 19 [2024-10-14 18:10:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:12,979 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2024-10-14 18:10:12,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2024-10-14 18:10:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 18:10:12,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:12,980 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:12,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 18:10:12,980 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:12,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash 537192946, now seen corresponding path program 1 times [2024-10-14 18:10:12,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:12,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87846120] [2024-10-14 18:10:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:12,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87846120] [2024-10-14 18:10:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87846120] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:13,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:13,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 18:10:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378911070] [2024-10-14 18:10:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:13,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 18:10:13,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 18:10:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:10:13,002 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:13,036 INFO L93 Difference]: Finished difference Result 131 states and 158 transitions. [2024-10-14 18:10:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 18:10:13,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-14 18:10:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:13,037 INFO L225 Difference]: With dead ends: 131 [2024-10-14 18:10:13,037 INFO L226 Difference]: Without dead ends: 131 [2024-10-14 18:10:13,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 18:10:13,038 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:13,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 18:10:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-14 18:10:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-10-14 18:10:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 110 states have (on average 1.4363636363636363) internal successors, (158), 130 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2024-10-14 18:10:13,041 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 20 [2024-10-14 18:10:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:13,041 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2024-10-14 18:10:13,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2024-10-14 18:10:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 18:10:13,041 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:13,041 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:13,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 18:10:13,042 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:13,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash -522394084, now seen corresponding path program 1 times [2024-10-14 18:10:13,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:13,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387901133] [2024-10-14 18:10:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:13,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:13,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:13,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387901133] [2024-10-14 18:10:13,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387901133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:13,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:13,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 18:10:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281197938] [2024-10-14 18:10:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:13,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:13,138 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:13,303 INFO L93 Difference]: Finished difference Result 188 states and 223 transitions. [2024-10-14 18:10:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 18:10:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-14 18:10:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:13,305 INFO L225 Difference]: With dead ends: 188 [2024-10-14 18:10:13,305 INFO L226 Difference]: Without dead ends: 188 [2024-10-14 18:10:13,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-14 18:10:13,305 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 66 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:13,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 240 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-10-14 18:10:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 136. [2024-10-14 18:10:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.4260869565217391) internal successors, (164), 135 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 164 transitions. [2024-10-14 18:10:13,308 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 164 transitions. Word has length 21 [2024-10-14 18:10:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:13,309 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 164 transitions. [2024-10-14 18:10:13,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 164 transitions. [2024-10-14 18:10:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-14 18:10:13,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:13,310 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:13,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 18:10:13,310 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:13,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash -34712243, now seen corresponding path program 1 times [2024-10-14 18:10:13,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887702321] [2024-10-14 18:10:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:13,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:13,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887702321] [2024-10-14 18:10:13,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887702321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:13,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:13,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 18:10:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231777453] [2024-10-14 18:10:13,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:13,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 18:10:13,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 18:10:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-14 18:10:13,466 INFO L87 Difference]: Start difference. First operand 136 states and 164 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:13,846 INFO L93 Difference]: Finished difference Result 191 states and 224 transitions. [2024-10-14 18:10:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 18:10:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-14 18:10:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:13,847 INFO L225 Difference]: With dead ends: 191 [2024-10-14 18:10:13,847 INFO L226 Difference]: Without dead ends: 191 [2024-10-14 18:10:13,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-14 18:10:13,848 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 163 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:13,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 415 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 18:10:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-14 18:10:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 136. [2024-10-14 18:10:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.4173913043478261) internal successors, (163), 135 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 163 transitions. [2024-10-14 18:10:13,851 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 163 transitions. Word has length 22 [2024-10-14 18:10:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:13,852 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 163 transitions. [2024-10-14 18:10:13,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 163 transitions. [2024-10-14 18:10:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-14 18:10:13,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:13,853 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:13,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 18:10:13,853 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:13,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 856886732, now seen corresponding path program 1 times [2024-10-14 18:10:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:13,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059965521] [2024-10-14 18:10:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:13,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:13,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059965521] [2024-10-14 18:10:13,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059965521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:13,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:13,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 18:10:13,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835641332] [2024-10-14 18:10:13,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:13,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:10:13,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:13,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:10:13,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:13,901 INFO L87 Difference]: Start difference. First operand 136 states and 163 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:13,958 INFO L93 Difference]: Finished difference Result 140 states and 166 transitions. [2024-10-14 18:10:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:10:13,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-14 18:10:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:13,959 INFO L225 Difference]: With dead ends: 140 [2024-10-14 18:10:13,959 INFO L226 Difference]: Without dead ends: 140 [2024-10-14 18:10:13,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:13,960 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:13,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:13,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-10-14 18:10:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-10-14 18:10:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 139 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2024-10-14 18:10:13,963 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 22 [2024-10-14 18:10:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:13,963 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2024-10-14 18:10:13,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2024-10-14 18:10:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 18:10:13,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:13,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:13,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 18:10:13,964 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:13,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1232352539, now seen corresponding path program 1 times [2024-10-14 18:10:13,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413878559] [2024-10-14 18:10:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:14,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:14,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413878559] [2024-10-14 18:10:14,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413878559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:14,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:14,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 18:10:14,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928883269] [2024-10-14 18:10:14,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:14,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 18:10:14,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 18:10:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 18:10:14,046 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:14,204 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2024-10-14 18:10:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 18:10:14,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-14 18:10:14,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:14,205 INFO L225 Difference]: With dead ends: 158 [2024-10-14 18:10:14,206 INFO L226 Difference]: Without dead ends: 158 [2024-10-14 18:10:14,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 18:10:14,206 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:14,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 276 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:14,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-14 18:10:14,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 143. [2024-10-14 18:10:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 142 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2024-10-14 18:10:14,210 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 23 [2024-10-14 18:10:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:14,210 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2024-10-14 18:10:14,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2024-10-14 18:10:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 18:10:14,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:14,211 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:14,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 18:10:14,212 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:14,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash 501000054, now seen corresponding path program 1 times [2024-10-14 18:10:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:14,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884354448] [2024-10-14 18:10:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:14,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884354448] [2024-10-14 18:10:14,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884354448] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:10:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888930152] [2024-10-14 18:10:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:14,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:10:14,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:10:14,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:10:14,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 18:10:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:14,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 18:10:14,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:10:14,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:10:14,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:10:14,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-14 18:10:14,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-14 18:10:14,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-14 18:10:14,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-14 18:10:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:14,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:10:15,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-10-14 18:10:15,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-14 18:10:15,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-10-14 18:10:15,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888930152] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:10:15,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:10:15,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 12 [2024-10-14 18:10:15,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378606711] [2024-10-14 18:10:15,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:10:15,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 18:10:15,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 18:10:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 18:10:15,461 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:15,884 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2024-10-14 18:10:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 18:10:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-14 18:10:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:15,885 INFO L225 Difference]: With dead ends: 201 [2024-10-14 18:10:15,885 INFO L226 Difference]: Without dead ends: 201 [2024-10-14 18:10:15,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2024-10-14 18:10:15,886 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 341 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:15,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 292 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 18:10:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-14 18:10:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2024-10-14 18:10:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 149 states have (on average 1.389261744966443) internal successors, (207), 169 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2024-10-14 18:10:15,889 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 23 [2024-10-14 18:10:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:15,890 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2024-10-14 18:10:15,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2024-10-14 18:10:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-14 18:10:15,890 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:15,890 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:15,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 18:10:16,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-14 18:10:16,092 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:16,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 630085771, now seen corresponding path program 1 times [2024-10-14 18:10:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:16,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028692150] [2024-10-14 18:10:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:16,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028692150] [2024-10-14 18:10:16,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028692150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:16,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:16,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 18:10:16,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314989534] [2024-10-14 18:10:16,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:16,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 18:10:16,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:16,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 18:10:16,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-14 18:10:16,449 INFO L87 Difference]: Start difference. First operand 170 states and 207 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:17,035 INFO L93 Difference]: Finished difference Result 194 states and 230 transitions. [2024-10-14 18:10:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 18:10:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-14 18:10:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:17,037 INFO L225 Difference]: With dead ends: 194 [2024-10-14 18:10:17,037 INFO L226 Difference]: Without dead ends: 194 [2024-10-14 18:10:17,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-10-14 18:10:17,038 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 140 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:17,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 484 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 18:10:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-10-14 18:10:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 168. [2024-10-14 18:10:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 147 states have (on average 1.380952380952381) internal successors, (203), 167 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 203 transitions. [2024-10-14 18:10:17,042 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 203 transitions. Word has length 25 [2024-10-14 18:10:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:17,042 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 203 transitions. [2024-10-14 18:10:17,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 203 transitions. [2024-10-14 18:10:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 18:10:17,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:17,043 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:17,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 18:10:17,044 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:17,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash 281600780, now seen corresponding path program 1 times [2024-10-14 18:10:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:17,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241958742] [2024-10-14 18:10:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 18:10:17,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:17,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241958742] [2024-10-14 18:10:17,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241958742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:10:17,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 18:10:17,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 18:10:17,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150020163] [2024-10-14 18:10:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:10:17,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 18:10:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:17,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 18:10:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 18:10:17,084 INFO L87 Difference]: Start difference. First operand 168 states and 203 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:17,187 INFO L93 Difference]: Finished difference Result 182 states and 212 transitions. [2024-10-14 18:10:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 18:10:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-14 18:10:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:17,188 INFO L225 Difference]: With dead ends: 182 [2024-10-14 18:10:17,188 INFO L226 Difference]: Without dead ends: 182 [2024-10-14 18:10:17,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 18:10:17,189 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 94 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:17,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 112 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 18:10:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-14 18:10:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2024-10-14 18:10:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 147 states have (on average 1.3673469387755102) internal successors, (201), 167 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 201 transitions. [2024-10-14 18:10:17,193 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 201 transitions. Word has length 26 [2024-10-14 18:10:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:17,193 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 201 transitions. [2024-10-14 18:10:17,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 201 transitions. [2024-10-14 18:10:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 18:10:17,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:17,194 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:17,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 18:10:17,195 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:17,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash -131323555, now seen corresponding path program 1 times [2024-10-14 18:10:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:17,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000707845] [2024-10-14 18:10:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:17,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000707845] [2024-10-14 18:10:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000707845] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:10:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448952244] [2024-10-14 18:10:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:17,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:10:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:10:17,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:10:17,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 18:10:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:17,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-14 18:10:17,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:10:17,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 18:10:17,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:10:17,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:10:17,933 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 18:10:17,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-14 18:10:17,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:17,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-14 18:10:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:17,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-14 18:10:18,092 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-14 18:10:18,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2024-10-14 18:10:18,122 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-14 18:10:18,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 18:10:18,202 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-14 18:10:18,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2024-10-14 18:10:18,227 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-14 18:10:18,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 18:10:18,302 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-14 18:10:18,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 43 [2024-10-14 18:10:18,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-10-14 18:10:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:18,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:10:18,608 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (and (forall ((v_ArrVal_713 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_713) |c_ULTIMATE.start_main_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~head~0#1.base|)) (forall ((v_ArrVal_714 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_714) |c_ULTIMATE.start_main_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2024-10-14 18:10:18,647 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (and (forall ((v_ArrVal_713 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_713) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) |c_ULTIMATE.start_main_~head~0#1.base|)) (forall ((v_ArrVal_714 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_714) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2024-10-14 18:10:22,670 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (and (forall ((v_ArrVal_713 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_#t~malloc7#1.base|)) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_713) |c_ULTIMATE.start_main_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~head~0#1.base|)) (forall ((v_ArrVal_714 (Array Int Int)) (|ULTIMATE.start_main_#t~malloc7#1.offset| Int)) (= (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_#t~malloc7#1.offset|)) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_714) |c_ULTIMATE.start_main_~head~0#1.base|) .cse0) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2024-10-14 18:10:26,912 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:26,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:10:26,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2024-10-14 18:10:26,929 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:26,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:10:26,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 30 [2024-10-14 18:10:26,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-14 18:10:26,945 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:26,949 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-10-14 18:10:26,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 1 [2024-10-14 18:10:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:32,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448952244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:10:32,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:10:32,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-10-14 18:10:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062769033] [2024-10-14 18:10:32,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:10:32,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 18:10:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 18:10:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=514, Unknown=6, NotChecked=144, Total=756 [2024-10-14 18:10:32,782 INFO L87 Difference]: Start difference. First operand 168 states and 201 transitions. Second operand has 28 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:36,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 18:10:40,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 18:10:45,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 18:10:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:10:51,523 INFO L93 Difference]: Finished difference Result 297 states and 344 transitions. [2024-10-14 18:10:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-14 18:10:51,524 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-14 18:10:51,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:10:51,526 INFO L225 Difference]: With dead ends: 297 [2024-10-14 18:10:51,526 INFO L226 Difference]: Without dead ends: 297 [2024-10-14 18:10:51,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=551, Invalid=2106, Unknown=7, NotChecked=306, Total=2970 [2024-10-14 18:10:51,528 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 389 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 119 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 694 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-10-14 18:10:51,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 900 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1391 Invalid, 11 Unknown, 694 Unchecked, 13.3s Time] [2024-10-14 18:10:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-10-14 18:10:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 186. [2024-10-14 18:10:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 165 states have (on average 1.3515151515151516) internal successors, (223), 185 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 223 transitions. [2024-10-14 18:10:51,532 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 223 transitions. Word has length 27 [2024-10-14 18:10:51,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:10:51,532 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 223 transitions. [2024-10-14 18:10:51,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.75) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:10:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 223 transitions. [2024-10-14 18:10:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 18:10:51,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:10:51,533 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 18:10:51,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 18:10:51,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-14 18:10:51,734 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-10-14 18:10:51,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:10:51,735 INFO L85 PathProgramCache]: Analyzing trace with hash 943697870, now seen corresponding path program 1 times [2024-10-14 18:10:51,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:10:51,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030724359] [2024-10-14 18:10:51,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:51,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:10:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:52,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:10:52,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030724359] [2024-10-14 18:10:52,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030724359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:10:52,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235108537] [2024-10-14 18:10:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:10:52,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:10:52,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:10:52,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:10:52,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 18:10:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:10:52,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-14 18:10:52,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:10:52,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 18:10:52,506 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-14 18:10:52,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-10-14 18:10:52,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:10:52,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 18:10:52,644 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-14 18:10:52,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-10-14 18:10:52,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-10-14 18:10:52,763 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2024-10-14 18:10:52,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-10-14 18:10:52,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:52,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-14 18:10:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:52,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2024-10-14 18:10:53,056 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-14 18:10:53,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 38 [2024-10-14 18:10:53,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:53,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-10-14 18:10:53,234 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-14 18:10:53,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 38 [2024-10-14 18:10:53,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:53,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-10-14 18:10:53,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:53,295 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-14 18:10:53,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 55 [2024-10-14 18:10:53,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2024-10-14 18:10:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:53,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 18:10:53,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:10:53,855 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 18:10:53,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 32 [2024-10-14 18:10:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:53,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:10:54,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:10:54,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 48 [2024-10-14 18:10:55,301 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:10:55,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 52 [2024-10-14 18:10:55,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2024-10-14 18:10:55,322 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-10-14 18:10:55,334 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-10-14 18:10:55,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2024-10-14 18:10:55,418 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:10:55,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-10-14 18:10:55,441 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 18:10:55,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2024-10-14 18:10:55,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2024-10-14 18:10:55,460 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2024-10-14 18:10:55,467 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-10-14 18:10:55,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2024-10-14 18:10:55,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-10-14 18:10:55,510 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-10-14 18:10:55,519 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 18:10:55,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 18:10:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 18:10:56,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235108537] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:10:56,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:10:56,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 17] total 43 [2024-10-14 18:10:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145907549] [2024-10-14 18:10:56,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:10:56,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-14 18:10:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:10:56,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-14 18:10:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1593, Unknown=19, NotChecked=0, Total=1892 [2024-10-14 18:10:56,530 INFO L87 Difference]: Start difference. First operand 186 states and 223 transitions. Second operand has 44 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 44 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:11:04,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 18:11:09,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 18:11:13,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 18:11:17,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 18:11:18,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 18:11:22,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 18:11:33,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]